I will answer all your questions in the order in which you inquired.
1) Trigger trade is a trading alert call based on Alex's TTW system of filters and triggers. They are called in text and audio in the room and are suitable for all traders. MaxSpan is a longer term 'swing' type setup which uses a wider stop. It's more of a trend following system. The setup rules for it are in our 'setups' forum and available to all trials and members.
2) We call it the 'newbie' track record because the trades shown on that record are only based upon the first target. A lot of times we'll be in a profitable trade and move on to a second target for bigger gains. That target is not included in the track record. We want to show what a newbie should be doing not a seasoned professional. This is why some of our users do better then the track record.
3) Yes, we're using $5 commissions. However brokers such as Infinity and IB have a bit lower commissions. Usually around $4 Just divide the total P&L by 5 if you want to see the results with 1 contract.
4) The type of account you need depends on the brokers margin requirements. With http://www.infinitybrokerage.com
you'd need an account size of $3000. I believe their margin is $500 per YM contract. Please check with them as it may have gone up or down. There is also a link to a simulator on our FAQ page at http://puretick.com/faq.html
It sounds like you have not traded futures before, please use a live simulator and follow along for a few weeks before jumping in to cash.